International audience
L'évolution des recherches en optique guidée depuis la naissance de cette spécialité a toujours été intimement liée aux progrès effectués sur les matériaux. Au début, il s'est agit d'obtenir des matériaux les plus purs possibles afin d'éviter les phénomènes néfastes d'absorption et de diffusion de l'onde lumineuse dans le milieu. En 1969,...
We present some of our research activities dedicated to doped silica-based optical fibers, aiming at understanding the spectral properties of luminescent ions, such as rare-earth and transition metal elements. The influence of the local environment on dopants is extensively studied: energy transfer mechanisms between rare-earth ions, control of...
International audience
In this presentation we would discuss design and fabrication issues with regard to dispersion tailoring of optical fibers for specialty applications. Various design tools, which could be exploited for such purpose, would be discussed.
We report precise quantification of the percentage of ion clusters in Er:ZBLAN fibers by measurement of nonsaturable optical absorption and fitting of these data to a simple theoretical model that includes the role of clustering. In particular, using this indirect measurement technique, we demonstrate that 51% of the ions are present in...
International audience